Solution Concept for REDDIG II Based on SkyWAN Technology - ICAO

<strong>Solution</strong> <strong>Concept</strong> <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong>Agenda ND SatCom Involvement in VSAT <strong>for</strong> ATC Can the expectations <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> be met Design Elements of a VSAT Network - Methodology Practical suggestionsDate - 2

Air Traffic Control NetworksND SatCom provides satellite based aeronauticalcommunications solutions since 1999 to National air traffic management agencies and supranational associationsin cooperation with the respective organizations and Prime Contractors of turnkey projects System Integrators and Service ProvidersChinaSouth Pacific Central Asia AfricaDate - 3

PrimeContractorDate - 6CountryAeronautical VSAT Networks with SkyWANCustomer / UserOrganisationStationsPrimaryApplicationsIATA, Afghanistan Afghanistan Ministry of Civil Aviation Afghanistan 10 GAC, ATS 1999Ministry ofTransportation PNGPNG CAA Papua New Guinea 15 Radar, GAC 2000Hua Ying Company,various applicationsChina Air Defence 106China(encrypted)2001ND SatCom Sudan CAA Sudan 10 Air Traffic Control 2002Hua Ying Company,various applicationsChina Air Defence 94China(encrypted)2003IATA, Irak IATA Irak 12 Radar, GAC 2004LTT Libya LCCA 9 Air Traffic Control 2004IATAAfghanistan, Iran, Pakistan,UsbekistanIATA, Central Asia 32 GAC, ATS 2004-2007Hua Ying Company,various applicationsChina Air Defence 9China(encrypted)2005ATNS, South Africa 28 South&East-African States Network <strong>for</strong> SADC & NAVISAT 40 Regional Exchange 2006IATA, East Asia Korea IATA East Asia 6 GAC, ATS 2006Ineo Engineering,FranceVenezuela INAC Venezuela 31 Radar, GAC 2006Flightcraft, South Africa Angola ENANA, Angola 7 Radar, GAC 2008Ineo Engineering,France13 Westafrican States ASECNA States 15 GAC 2008Thales Air Systems,FranceNigeria NAMA 9 Radar 2009BTC, KSA Saudi Arabia GACA 29 Radar, GAC 2009Ineo Engineering,FrancePeru CORPAC Peru 8 Radar 2010Indra, Spain Paraguay DINAC Paraguay 6 Radar, GAC, ATS 2010Mocom, Nigeria Nigeria NAMA 23 GAC, AMHS 2010Year

<strong>Solution</strong> <strong>Concept</strong> <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong>Agenda ND SatCom Involvement in VSAT <strong>for</strong> ATC Can the Expectations <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> be met Design Elements of a VSAT Network - Methodology Practical SuggestionsDate - 7

Date - 8Can the Expectations <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> be met

Can the Expectations <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> be metModem related Improvements in cost effectiveness Superior TDMA Architecture time slot size can be customized <strong>for</strong> the applications every time slot can contain in<strong>for</strong>mation to all nodes listening to the carrier Carrier sizes can be adjusted to traffic requirements & optimized <strong>for</strong> ODUs 8PSK Modulation and Turbo Phi Coding Reduced Channel SpacingDate - 9

Improvements in system per<strong>for</strong>manceMF-TDMA Frame Layout – up to 8 Frequency ChannelsDate - 10

Improvements in system per<strong>for</strong>manceMF-TDMA Frame Layout – Streaming Slots – Jitter FreeDate - 11

<strong>Solution</strong> <strong>Concept</strong> <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong>Agenda ND SatCom Involvement in VSAT <strong>for</strong> ATC Can the Expectations <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> be met Design Elements of a VSAT Network - Methodology Practical SuggestionsDate - 13

Design Elements of a VSAT Network<strong>Solution</strong> <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> ?Date - 14

Design Elements of a VSAT NetworkIterative Designing Process VSAT Network: Aggregate traffic flow in the network to a total required data rate capacitydifferentiate between PAMA and DAMA traffic Estimate volume of required satellite capacity and secure budget <strong>for</strong> it Find suitable satellite with available capacity and make a reservation Run link budgets with variations of antenna size, modulation and FEC rates <strong>for</strong>locations with significant pattern (dis-)advantages in the footprintcompare cost of ownership over the assumed life cycle <strong>for</strong> different scenarios of antennasizes, RF power and bandwidth consumptionDate - 16

Design Elements of a VSAT NetworkIterative Designing Process VSAT Network cont’d: Select antenna sizes and maximum carrier data rates (<strong>for</strong> min. RF power) MF TDMA carrier design according to traffic volume’ connectivity and efficiency total minimum bandwidth requirement (to be contracted) System design, network layer diagrams Station design, equipment configuration diagramsDate - 17

<strong>Solution</strong> <strong>Concept</strong> <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong>Agenda ND SatCom Involvement in VSAT <strong>for</strong> ATC Can the expectations <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> be met Design Elements of a VSAT Network - Methodology Practical suggestionsDate - 18

Practical suggestionsAll IP based network ??? Ground air communications Dangerous applicationsCongestion avoidance (by design) Go ahead !!!Impact of IP basedconnectionsCapacity and bandwidth planning:IP Voice communication is nolonger planned according tonumber of voice channels, butaccording to Bandwidth andlatency requirementsQoS and priority handling: Mixingsafety critical and administrativecommunication must be plannedcarefully as the network itself doesnot guarantee latency and packetloss(especially in congestionscenarios)Date - 19

Practical suggestionsMigration from <strong>REDDIG</strong> I:The OptionsBig Bang<strong>REDDIG</strong> <strong>II</strong> will be implementedparallel to the still operational<strong>REDDIG</strong> I. Once complete and fullytested <strong>REDDIG</strong> I is switched off andall peripheral devices are connectedto <strong>REDDIG</strong> <strong>II</strong>, which starts operationimmediately thereafter.Drawback: service interruptionStep by StepThe core of <strong>REDDIG</strong> <strong>II</strong> will beimplemented and one node after theother is switched over from the stilloperational <strong>REDDIG</strong> I to the newnetwork.Drawback: complicated procedure;temporarily reduced connectivity(double hop)Date - 20In any case:extra satellite capacity required in the transition perioda second antenna is advantageous (regardless whether the satellite remains)

Practical suggestionsNetwork Availability <strong>for</strong> <strong>REDDIG</strong> <strong>II</strong> Link availability variation 99.5% 99.99% requires ~50% more power How to count <strong>for</strong> the other factors?Per link / per total network (which metric?); per year / per worst month? What to assume <strong>for</strong> the MTTR? Terminal design must reflect differences in MTBF <strong>for</strong> componentsDate - 21MTTR: Mean Time To RepairMTBF: Mean Time between Failure

Practical suggestionsVSAT Network ProblemsThe causes <strong>for</strong> failures (by importance): Poor installation Power outage Lightning Satellite Interference/ Outages Interference from terrestrial and airborne sourcesDate - 22

Redundant ChainFR/ using FAD/ Layer 2 SwitchingSkyWAN IDUSkyWAN FADSwitchSkyWAN RFTDate - 23

Redundant ChainIP/ no external Device/ Layer 3 RoutingSkyWAN IDURouterSkyWAN RFTDate - 24

Practical suggestionsEnhanced Support Option out ofEurope <strong>for</strong> System Integrator/ManufacturerSatellite Capacitye.g. on NSS-806/SES-6Date - 25

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